In the bud tent it is roughly 12-18" away. The one curling in the back was really dry and didn't like the nuts. Since it is really just growing to grow. I have not messed with it yet. I feed them last night with 6ph water only. I have only feed them once with nutes. But I don't remember what the pH was after. I will give them a good dose next weekend. And I'll get the pH for you guys.
The mars 2 400w in the garden was turning a lot of the pepper plants leaves purple. And from what info I found on that. It is sun burn. So it sits at least 24" above the tallest of plants in there. They seem to love it. I know for that size I need more wattage. However not sure what light I want to get. I want to contact Sara. To see how much a 1200w mars with veg/bloom switch would set me back.